Port Louis (Mauritius) weather in January

January in Port Louis: sweltering, soaked, with clean air — fine if you can take 25 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Port Louis🇲🇺 Mauritius · Indian Ocean Islands · Island77
  1. 77Jan
  2. 76Feb
  3. 79Mar
  4. 82Apr
  5. 86May
  6. 87Jun
  7. 87Jul
  8. 90Aug
  9. 91Sep
  10. 92Oct
  11. 89Nov
  12. 84Dec

#11 of 12 months in Port Louis · #549 of 1413 destinations to visit in January · comfort 77/100 (tier B)

Days
30°C
Nights
26°C
Wet days
25
Sun
11.2 h
Humidity
79%
Daylight
13 h
Port Louis, Mauritius
Photo: Chen EdisoN · Pexels

Traveller notes on Port Louis in January

Notes from nearby Grand Baie (19 km away)

Port Louis doesn't have its own notes for January yet — these are about Grand Baie, close enough to share the season.

Mauritius forum threads are direct that January is hot and humid summer, often pushing past 30C, and sits right in the wettest and peak cyclone stretch of the year (January-March). The typical rain pattern described: a burst of maybe 15 minutes followed by a couple of clear hours before the cycle repeats - though a cyclone passing nearby can mean several consecutive rainy days confined largely to the hotel. Posters were clear that direct cyclone hits are rare even in peak season, and outcomes vary widely year to year - some visitors get lucky with little rain, others hit a genuinely wet stretch, with a quality resort and flexible plans the standard recommendation either way.
MauritiusNorthCoastRegular · January · 1 month ago · about Grand Baie · Read more on Tripadvisor ↗

Other months in Port Louis

Regulars are specific this counts as one of the best months to visit, genuinely good anywhere on the island, real heavy rain not expected to arrive until around mid-December even though some rain does fall this month itself. Our row backs that hot, genuinely wet read, 28.3C reading as a hot 31C, over 23.4C nights feeling 25C, with 66.1mm of rain across 14.9 days and humidity at 74 percent. Regulars are consistent cyclone season doesn't properly start until December, running through April, so this month reads as genuinely safe on that front, any rain that does fall typically brief rather than a settled wet day. The sea sits at a warm, swimmable 26.8C. The record: 11.9 hours of sun, a 22.8 kph wind and AQI 29.
BestMonthRealRainWaitsForDecember · November · 1 month ago · Read more on Tripadvisor ↗
August is winter here and the regulars' advice is about which side of the island you book. The south-easterly trades blow hard through July and August and do not ease until well into September; on the east and south coasts they can take the beach away from you altogether, which is why the boards point people to the north and west. Our row sits on the sheltered side at 24.9C by day over 20.5C nights, and even here the wind averages 28.6 kph. Rain looks frequent at 11.5 days but totals 38.3mm, three millimetres a time. The sea holds 24.8C. Their east-coast figure runs a degree or two under ours, which is the wind rather than the thermometer. The record: humidity 72 percent, 10.4 hours of sun and AQI 39.
PickTheLeewardCoast · August · 1 month ago · Read more on Tripadvisor ↗
September is the turn of the Mauritian year - winter runs April to September, summer October to March - so the month starts in one and ends in the other. The forum's practical version: high 20s C, occasional cloud and showers, a sea around 23C, and less chance of rain than most months. The variable is wind. The winter trades are still blowing early in September, strongest on the east and south coasts, and they ease towards the end of the month and further into October. If wind matters to your trip, regulars say pick the west or north, which are sheltered, and the later half of the month over the earlier. The record: 25.7C days, 20.8C nights, 12.3 precipitation days but only 30.3mm, a 24.8C sea and a 28 kph wind.
WestSideIfWindy · September · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe April daytime temperatures typically in the high-70s to low-80sF (roughly 27-29C), still hot and humid early in the month with conditions gradually easing toward late April. Posters are consistent that rain remains a real, frequent feature - easily half the month's days seeing some rain, most often a short shower overnight or in the evening rather than an all-day washout, though a handful of visitors have reported heavier downpours causing localized flooding around Port Louis itself. Posters generally rate late April into early May as noticeably more pleasant than early April, with warm temperatures holding while the heaviest mid-summer rain eases off.
Tripadvisor community · April · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Port Louis's card on the map.

Port Louis climate normals — January

Daytime high30°C / 85°F🔥 sweltering
Nighttime low26°C / 78°F
Feels like (high)34°C / 93°F
Sea temperature28°C / 82°F😎 warm sea
Rainfall192 mm / 7.6 in⛈ soaked
Rainy days25 days
Humidity79%💦 very humid
Dew point23°C / 74°F
Sunshine11.2 h/day
Daylight13.2 h
Wind24 km/h / 15 mph
Air quality (US AQI)31🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Port Louis in January

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 5 of the markets that fill it, one of its worst months for weather(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Port Louis's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherPort Louis's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

JFMAMJJASOND

What's on in Port Louis in January

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Thaipoosam Cavadee

    15 Jan – 15 Feb · usuallyReligious feast

    Tamil Mauritians carry wooden cavadee frames to the riverside temples after ten days of fasting, cheeks and tongues pierced. A public holiday, and a religious occasion rather than a spectacle laid on for anyone. Source ↗

  • Festival

    Chinese New Year in Chinatown

    20 Jan – 20 Feb · usuallyLunar New YearClosures

    Port Louis has the oldest Chinatown in the Indian Ocean and marks it properly: firecrackers down Royal Street, wax cakes sold out of the shophouses, and a lion dance through the market. Source ↗

  • Hazard

    Cyclone season

    15 Nov – 15 May · usually

    The Mauritius Meteorological Services run their warning classes from mid-November to mid-May. A class III shuts the capital — offices, buses, the market — usually for a day or two, and January to March is the likeliest stretch. Source ↗

What's on around the world in January →

Nearby, and something's on

Within 300 km of Port Louis — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Port Louis?

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Port Louis in January — FAQ

Is January a good time to visit Port Louis?
January in Port Louis: sweltering, soaked, with clean air — fine if you can take 25 rainy days. It ranks #11 of 12 months for Port Louis on SeasonMap's comfort score (77/100).
What is the weather like in Port Louis in January?
In January, Port Louis averages a daily high of 29.7°C and a low of 25.6°C, with about 192.4 mm of rain over roughly 25.2 rainy days.
What is the air quality in Port Louis in January?
Port Louis has a mean US Air Quality Index of about 31 in January.

Within 300 km: Grand Baie's Thaipoosam Cavadee around 15 Jan – 15 Feb.